Retro-Breakthrough 1

A magazine competition invited people to come up with "invented" inventions of the cyber-age.
For example, a solar powered clothes drier (a rope) and a hand-held word processor (a pencil). Can you guess what this is?

It is a portable arcade. A hand-held amusement resource with no cartridges or batteries. Access games of speed, dexterity, memory, cunning. Produce magical effects or construct lofty towers. Some games can increase your income.